Thursday, January 7, 2010

Multi-core processor

A multi-core processor is a processing system composed of two or more independent cores. It can be described as an integrated circuit to which two or more individual processors (called cores in this sense) have been attached.[1] The cores are typically integrated onto a single integrated circuit die (known as a chip multiprocessor or CMP), or they may be integrated onto multiple dies in a single chip package. A many-core processor is one in which the number of cores is large enough that traditional multi-processor techniques are no longer efficient — this threshold is somewhere in the range of several tens of cores — and likely requires a network on chip.

A dual-core processor contains two cores, and a quad-core processor contains four cores. A multi-core processor implements multiprocessing in a single physical package. Cores in a multi-core device may be coupled together tightly or loosely. For example, cores may or may not share caches, and they may implement message passing or shared memory inter-core communication methods. Common network topologies to interconnect cores include: bus, ring, 2-dimensional mesh, and crossbar. All cores are identical in homogeneous multi-core systems and they are not identical in heterogeneous multi-core systems. Just as with single-processor systems, cores in multi-core systems may implement architectures such as superscalar, VLIW, vector processing, SIMD, or multithreading.

Multi-core processors are widely used across many application domains including: general-purpose, embedded, network, digital signal processing, and graphics.

The amount of performance gained by the use of a multi-core processor is strongly dependent on the software algorithms and implementation. In particular, the possible gains are limited by the fraction of the software that can be parallelized to run on multiple cores simultaneously; this effect is described by Amdahl's law. In the best case, so-called embarrassingly parallel problems may realize speedup factors near the number of cores. Many typical applications, however, do not realize such large speedup factors and thus, the parallelization of software is a significant on-going topic of research.

Thursday, April 9, 2009

Elliott Wave Principle: Key to Market Behavior by Robert Prechter

Highly acclaimed basic handbook of Elliott Wave Theory which has come to be regarded as a definitve work in this area. Thoroughly covers all the relative concepts. Fibonacci Numbers, wave analysis, time sequence, cyclic analysis, etc. One of the most fascinating books on market forecasting you'll ever read.

Part 1: Elliott Theory Chapter One: The Broad Concept including, *Basic Tenets *Terminology and Labeling * Impulse Waves and Variations *Corrective Waves *Zigzags * Flats * Triangles * Double and Triple Threes * Diagonal Triangle Type 2

Chapter Two: Associated Rules and Guidelines * Counting Rules * Alternation * Depth of Corrective Waves * Wave Equality * Charting the Waves * Channeling * Volume * The Right Look * Wave Personality * Learning the Basics * Applying the Basics

Chapter Three: Historical and Mathematical Background of the Wave Principle * Leonardo Fibonacci da Pisa * the Fibonacci Sequence * The Golden Section * The Golden Rectangle * The Golden Spiral * The Meaning of Phi

Elliott wave principle

The Elliott wave principle is a form of technical analysis that attempts to forecast trends in the financial markets and other collective activities. It is named after Ralph Nelson Elliott (1871–1948), an accountant who developed the concept in the 1930s: he proposed that market prices unfold in specific patterns, which practitioners today call Elliott waves. Elliott published his views of market behavior in the book The Wave Principle (1938), in a series of articles in Financial World magazine in 1939, and most fully in his final major work, Nature’s Laws – The Secret of the Universe (1946).[1] Elliott argued that because humans are themselves rhythmical, their activities and decisions could be predicted in rhythms, too. Critics argue that the Elliott wave principle is pseudoscientific and contradicts the efficient market hypothesis.

The wave principle posits that collective investor psychology (or crowd psychology) moves from optimism to pessimism and back again. These swings create patterns, as evidenced in the price movements of a market at every degree of trend.

Practically all developments which result from (human) socialeconomic processes follow a law that causes them to repeat themselves in similar and constantly recurring series of waves of definite number and pattern. R. N. Elliott's model, in Nature’s Law: The Secret of the Universe says that market prices alternate between five waves and three waves at all degrees within a trend, as the illustration shows. As these waves develop, the larger price patterns unfold in a self-similar fractal geometry. Within the dominant trend, waves 1, 3, and 5 are "motive" waves, and each motive wave itself subdivides in five waves. Waves 2 and 4 are "corrective" waves, and subdivide in three waves. In a bear market the dominant trend is downward, so the pattern is reversed—five waves down and three up. Motive waves always move with the trend, while corrective waves move opposite it.

Wednesday, March 18, 2009

The Television of the Future OLED-TV Pictures

Plasma, and LCD televisions will soon be a thing of the past, imagine a television screen as thin as a piece of paper that weighs no more than a few ounces. Or, so flexible it could be worn around your wrist and is virtually indestructible.

The primary benefit of OLED displays over traditional LCDs is that OLEDs do not require a backlight to function, and consume less power during operation. OLED displays are expected to be more efficiently manufactured than LCDs and plasma displays.

The AMOLED technology have full layers of cathode, organic molecules and anode, the anode layer overlays a thin film transistor (TFT) array that forms a matrix. The TFT array itself is the circuitry that determines which pixels get turned on to form an picture.The fledgling technology of making ultra-thin displays using organic light-emitting diodes (OLED) is starting to bear fruit finally with Sony, Samsung SDI and other makers introducing new applications.

Sony says that it is going to sell 11-inch OLED TVs for the first time in the world this year. Korean firms such as Samsung Electronics, Samsung SDI, LG Electronics, LG.Philips LCD and Neoview Kolon are also investing in the technology, which should replace the current LCD and plasma screens panels in the long term, becoming the norm for digital displays.

Samsung Electronics Digital Media President Park Jong-woo said that organic displays can be a breakthrough in its TV business, as the competition for creating bigger screens now does not carry much meaning to consumers.

Tuesday, March 17, 2009

PowerLite Pro Cinema 7500UB Projector

A superior cinematic experience. Quality beyond compare.
1600 lumens; 75,000:1 contrast ratio
D7 C2Fine® TFT technology for greater image detail
Built-in HQV processor
Color isolation feature for easy adjustments
120 Hz FineFrame™ tech. for smoother video
Preset color space
Anamorphic scaling mode
ISF calibration for customized viewing
Cinema filter for true-to-life color
Fujinon lens with 2.1 zoom ratio
12-bit panel driver for smoother gradations
Auto iris function for optimum speed/quality

PowerLite Pro Cinema 7500UB Marketing Brochure
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Whether you’re watching movies or sports, or playing video games, this 1080p projector ensures amazing image quality with the latest-generation Epson D7 panels, UltraBlack™ technology and 1600 lumens of color and white light output.1 With innovative color adjustment features and a state-of-the-art Fujinon lens, the kind typically used by renowned Hollywood filmmakers, this product delivers blockbuster video performance. And, with Epson’s 3LCD, 3-chip optical engine, it offers such incredible quality, you’re sure to achieve a true cinematic experience.
Setup is easy with the color isolation feature and ISF calibration, which allows you to adjust colors according to that which the filmmaker intended. The PowerLite Pro Cinema 7500 UB brings big-screen entertainment home in a whole new way.